I spray on liquid treating on canvas tilts that we manufacture.   
There is a waterbased product that I used to use called "Kampkote",  
but they pulled it off the market in 1 gal. bottles & only sell it in  
8 oz. spray bottles.  It works nicely & is easy to use, doesn't smell  
like the mineral spirits based treating I use now, but doesn't work  
as well.  You can spray or brush both these liquids on your canvas.

Your best bet is to go to a camping supply store & get what they  
recommend for canvas tents, but don't use anything w/ silicone in it  
like Scotchguard as it will yellow your canvas & make it brittle,  
supposedly.

YMMV,

Mr. BZ

On Sep 25, 2008, at 7:57 AM, Edward Duntz wrote:

> I would like to put some water repelant on my poptop canvas. The  
> canvas was there when I bought the van, and in almost new  
> condition, but I don't know which type it is. Is is a three-window,  
> pretty thin material.
>
> I'd like to know if anyone has used any water repelant on their  
> canvas that brushes on. Maybe that would be too heavy, but I  
> thought it would save me the hassle of being extra careful not to  
> get overspray where I didn't want it.
>
> Thannks,
> Ed in CT
>
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